Immersive Engineer Decor&Controls&Tool Reforged

## Engineer's Tools Implementation Summary

- Integrated selected Engineer's Tools content into Engineer's Decor & Controls Reforged under the unified `engineers_decor_reforged` namespace.
- Added handheld tools and utility items: REDIA Tool, Ore Crushing Hammer, Tracker, Ariadne Coal, Auto Stim Pack, Diving Air Capsule, Sleeping Bag, Material Storage Box, Muslee Bar Press, Muslee Bar, Mind Squeezer, Charged Lapis, Coarse Iron Grit, and Coarse Gold Grit.
- Added item models, textures, recipes, tooltips, and Immersive Engineering Engineer's Manual pages for the new tools.
- Implemented real in-game behavior for tool use, including REDIA tilling, hammer grit processing, Tracker position storage, Ariadne route markers, sleeping bag rest, material storage, Muslee Bar crafting, emergency stim/air capsule use, and Charged Lapis conversion.
- Reworked Ariadne Coal to place original-style black directional arrow markers with eight directions, including diagonals.
- Fixed durability and creative-mode handling so tools perform their action without incorrectly consuming durability in creative.
- Added safety checks for Material Storage Box data-bearing items and Muslee Bar Press inventory edge cases.
- Added focused GameTest coverage for the Engineer's Tools item set and validated the release jar with all 83 required GameTests.